Type-writing machine.



G. F. LUNDEBERG.

TYPE WRITING MACHINE.

APPLICATION FILED JUNE 21, 1910.

974,503. Patented Nov. 1,1910.

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UNITED STATES PATENT OFFICE.

CARL IF. LUNDEBERG, OF HARTFORD, CONNECTICUT, ASSIGNOR 'IO UNDER-WOODTYPE- WRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented Nov. 1, 1910.

To all whom it may concern:

Be it knownthat I, CARL F. LUNDEBERG, a citizen of the United States,residing in Hartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements in Ty e-WVriting Machines, of which the following is a specification.

This invention relates to paper-alining mechanism for typewritingmachines, and as to certain features it constitutes an 1mprovement onthe invention disclosed in my application filed December 2, 1909, SerialNo. 530,904; wherein the leading end of the work sheet after beingpassed loosely around the platen, is led to a stationary paper table,which forms a support upon which the sheet is adjusted to a gage.

In certain prior constructions of papergaging tables, the gage itselfhas been constructed for movement out of the path of the advancing worksheet, so that the latter may not encounter obstruct-ion in emergingfrom the machine. In some cases, the gage has been connected to themechanism which releases the pressure rolls that run upon the platen tofeed the paper around the same. To avoid the expense, complication andother difficulties that are sometimes found objectionable Where the gageis movable out of the path of the sheet, especially where it isconnected to the pressure-roll releasing mechanism, and to slmplify theoperation and relieve the mind of the operator from the necessity ofgiving attention to the matter of adjusting the gage into and out ofposition, I have contrived means to clear the leading edge of theadvancing sheet from the gage without the necessity of moving said gageby the manipulation of a special key or the like. To this end, the gageis normally covered or blanketed by the table itself, +so that table andgage are not in Working relation. The paper table is mounted in such away that the mere pres sure of the operators fingers upon the work sheetand table, moves said table down out of its normal position, and therebybrings about a working relation of the table and gage; the tableyielding far enough, at its upper portion, to uncover the gage, againstwhich the leading edge of the sheet is to be set. The operator may insome cases hold the sheet in such position until he restores thepressure rolls that run upon the platen, whereby the sheet is heldagainst displacement; and he may then relieve the sheet and table ofpressure, whereupon the table is lifted by a spring, to free the leadingedge of the work sheet from the gage, so that said sheet may advancefreely thereover.

Another object of the invention is to provide for readily securing thealining devices to existing machines without requiring special skill; towhich end the mechanism is mounted on a frame or base which isreleasably fastened to the platen frame, the mechanism being supportedin part by the surface of the platen itself, whereby said paper table isheld in the. exact relation to the platen surface required.

Other objects and advantages will hereinafter appear.

In the accompanying drawings, Figure 1 is a perspective rear view of oneembodiment of the invention. Fig. 2 is an end view showing itsapplication to the platen frame of an Underwood writing machine, partsbeing omitted, the work being set to the gage. Fig. 3 is an enlarged endview of the invention alone, the parts being in normal positions. Fig.4L is a detail rear view. Fig. 5 is a plan.

A platen 1 has an axle 2 j ournaled in the platen frame ends 3, whichare connected by the usual tie rod 4. The usual paper feed rolls 5 and 6are cast off from the platen by a release key (not shown) in the usualmanner. The work sheet 7 is inserted loosely between the platen and thefeed rolls, (which may be cast off prior to the introduction of thesheet) so that the leading edge of said sheet rises in front of theplaten.

A paper table 8, which, in visible writing machines, as the Underwood,is located above and preferably inclined upwardly and rearwardly fromthe platen, affords a sup port for the sheet while being adjusted. Saidtable is jointed to supporting arms or lugs 9, 9, the latter extendingfrom a base or frame 10, substantially parallel with the platen andhaving forked clamps 11 to embrace the tie rod, and being held rigidlyby set screws 12, which removably secure the paper alining mechanism tothe machine.

The leading end of the work sheet 7 is pressed down by the operator uponthe table 8, and squares its leading edge with a gage 15 carried by saidframe or base 10, and shown in the form of a ledge extending par allelwith the platen.

The table 8 is pivoted at 16 by ears 1'7 to the depending lugs or arms9, and is held up by a spring 18 so that its outer face normally liesabout flush with the top of gage 15, (Fig. 8). lVhen the leading edge ofthe sheet 7 is pressed down with the table (Fig. 2) the latter swings oryields downwardly, so that its upper edge exposes or uncovers the gage15, to enable the leading edge of the sheet to be alined or squaredthere against. While the sheet is still held by the operator, the feedrolls 5, 6 are restored to the platen, to retain the sheet, and then thepressure on the table is relieved, and the spring 18 raises the table tonormal position, thereby clearing the leading edge of the sheet from thegage or deflecting the sheet over the gage, to permit the sheet toadvance without obstruction. The lugs or arms 9 are flattened at 19(Fig. 3) below the pivotal connection 16 between the table and saidarms, to form stops to arrest the table. Said gage 15 may be adjustedforwardly and backwardly relatively to the printing line, either toaccommodate headings of difierent widths or to enable the printing tofall upon ruled lines on the work sheet; the ledge 15 for this purposebeing pivoted at 20 to one arm of each of elbow levers 21, which, inturn, are pivoted at 23 (preferably to ears 2%) on the base or frame 10.Said levers are connected by a link 25, pivoted at 26 to the remainingarms 27 thereof, one of said pivots 26 being in the form of a bindingscrew, which, when loosened, enables the gage to be shifted by thehandle 28 on one of said levers, and when tightened, holds the gageagainst displacement.

The lower edge of the table 8 may just clear the periphery of the platen1, to prevent the creeping of the leading end of the sheet between theplaten and paper table, and preferably rolls l8 (pivoted upon arms 9)run upon the platen, to support the paper alining frame. This enablesthe lower or front edge of the paper table to he very closely to but outof actual contact with the platen; the paper table being originallyswung down about the axis 4 until the rolls l3 touch the platen wherebythe lower edge of 8 is brought into the exact position requiredrelatively to the platen. The table may also have a strengthening rib orflange 14:.

It will be seen that the entire paper-alining mechanism forms anattachment readily applied to and removed from existing machines.

Having thus described my invention, I claim:

1. In a typewriting machine, the combina tion with a platen, of apaper-alining mechanism comprising a gage and a shiftable paper-tabletwith its upper edge lying flush with the outer edge of the gage to coveror blanket the latter.

2. In a typewriting machine, the combination with a platen, of apaper-alining mechanism comprising a paper gage and a yielding papertable to uncover the gage only when the leading edge of the work sheetis being alined therewith.

3. In a typewriting machine, the combination with a platen, of apaper-alining mechanism including a paper gage, a paper table hingedrelative to the gage, and a spring to hold the paper table in positionto sheathe the gage.

4. In a typewriting machine, the combination with a platen, of ayielding paper table, and paper-alining means normally renderedineffective by the position assumed by the paper table relative thereto.

5. In a typewriting machine, the combination with a platen, of aswinging paper table and a paper gage adjustable relative to theprinting line and normally sheathed by the position assumed by the papertable.

6. In a typewriting machine, the combination with a platen frame, a tierod, and a platen, of a paper alining attachment detachably secured tothe tie rod and comprising a paper-arresting gage and a tilting papertable whose free edge normally lies flush with the outer edge of thegage to enable the leading edge of the work sheet as it is advanced, toclear the gage.

7. In a typewriting machine, the combina tion with a platen, of apaper-alining mechanism comprising a stationary base, a paper gage adjustably connected thereto, and a tilting paper table whose free edgenormally blankets the gage to enable the leading edge of the work sheet,as it is advanced, to clear the gage.

8. In a typewriting machine, the combina tion with a platen, of apaperalining mechanism comprising a paper gage with which the leadingedge of the work sheet is alined, and a yielding paper table effectiveto un cover the gage when the work sheet is to be alined, and means toreturn the free edge of the paper table to lie flush with the outer edgeof the gage to disengage the leading edge of the work sheet from andenable it to clear the gage.

9. In a typewriting machine, the combination with a platen, of a paperalining mechanism including a paper gage located above the platen, and ayielding paper table extending between the platen and gage, on which theleading edge of the paper is shifted to aline it with the gage, the freeedge of said table normally held flush with the outer edge of the gageto cause the leading edge of the paper. to clear the gage.

10. In a typewriting machine, the combination with a platen, of a paperalining mechanism, including a paper gage spaced apart from andextending about parallel with the platen, and a yielding paper tablebetween the platen and gage, the lower edge of said table lying incontact with the platen to prevent the leading edge of the worksheetfrom entering between the platen and table, and bearings at the point ofcontact of the table and platen, the free edge of the table normallylying flush with the outer edge of the gage to sheathe the latter duringthe feed of the paper.

11. In a typewriting machine, the combination with a platen frame havinga tie rod and supporting a platen, of a paper alining attachmentincluding a paper-gage, a yielding paper table extending between theplaten and the gage and normally sheathing the latter, and clampingmeans to removably secure the attachment to the tie-rod.

12. In a typewriting machine, the combination with a platen and platenframe, of a paper-alining attachment including a yielding paper table, apaper gage normally sheathed by said table, and means to removablysecure the attachment to the platen frame.

13. In a typewriting machine, the combination with a platen, of a paperalining mechanism including a paper table, a paper gage, levers on whichthe gage is supported to be adjusted relative to the printing line, abar pivotally connected to the several levers, and a releasable lock torigidly fasten the bar to at least one of said levers to hold the gagewhere adjusted.

14:. In a typewriting machine, the combination with a platen, of a paperalining mechanism including a paper table, a paper gage, levers on whichthe gage is supported to be adjusted relative to the printing line, abar pivotally connected to the several levers, and a set screwconstituting one of said pivotal connections to lock the bar and leverrigidly together to hold the gage where adjusted.

15. In a typewriting machine, the combination with a platen, and aplaten frame having a tie rod, of a paper-alining attachment comprisinga base, clamps on the base to connect the attachment to the tie rod,levers pivoted to the base, a paper gage mounted on the levers foradjustment relative to the printing line, and a paper table hinged tothe base and yieldingly held in one position, to divert the work sheetfrom contact with the gage.

16. In a typewriting machine, the combination with a platen, of a paperalining mechanism, including a paper gage, and a paper table yieldingunder pressure to uncover the gage to enable the leading edge of of awork-sheet to be alined with the gage and to shift said work sheet outof contact with the gage when the pressure is removed.

17. In a typewriting machine, the combination with a platen, of apaper-alining mechanism, including a paper table and a gage, saidmechanism having bearings resting on the platen.

18. In a typewriting machine, the combination with a platen, of a paperalining mechanism, including a base or frame secured to the machine, apaper gage and a paper table carried by the base or frame, andsupporting rolls mounted on the frame and resting on the platen toimpart rigidity to the frame.

19. In a typewriting machine, the combination with a revoluble platen,of a sheetgagin table arranged over the platen, a gage for the leadingedge of the work sheet, said gage and table being normally out ofoperative relation, the table above the gage so that the sheet mayadvance freely past said gage, and means to cause the pressure of theoperators hand upon the sheet to bring said table and gage intooperative relation.

20. In a typewriting machine, the combination with a revoluble platen,of a sheet gaging table arranged over the platen, a gage for the leadingedge of the work sheet, said gage and table being normally out ofoperative relation, the table above the gage so that the sheet mayadvance freely past saidmage, means to cause the pressure of theoperators hand upon the sheet to bring said table and gage intooperative relation, and a spring to restore the normal relation of thegage and table.

CARL F. LUNDEBERG.

Witnesses:

W. M. BYORKMAN, MORTON G. TALOO'IT.

